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Income Taxes - Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred income tax assets |  |
Employee pensions and other liabilities | $ 62 | $ 63
Other balance sheet reserves and allowances | 13 | 18
Operating lease liabilities | 10 | 14
Tax loss and credit carryforwards | 105 | 80
Deferred revenue | 7 | 12
Intangibles and capitalized software | 155 | 0
Total deferred income tax assets | 352 | 187
Valuation allowance | (51) | (45)
Net deferred income tax assets | 301 | 142
Deferred income tax liabilities |  |
Intangibles and capitalized software | 0 | 8
Right of use assets - operating lease | 9 | 13
Property and equipment | 52 | 12
Other | 25 | 28
Total deferred income tax liabilities | 86 | 61
Total net deferred income tax assets | $ 215 | $ 81

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